Journal: Astronomy and Astrophysics

  • Publication
    Variation of coronal line widths on and off the disk
    We present observations of a Mg X 625 Å coronal line, obtained with the CDS instrument on SoHO, extending from the disk part of the coronal hole to ~ 90 000 km...
  • Publication
    Variation of the stellar initial mass function in semi-analytical models. III. Testing the cosmic-ray regulated integrated galaxy-wide initial mass function
    Context. In our previous work, we derived the CR-IGIMF, which is a new scenario for a variable stellar initial mass function (IMF) that combines numerical...
  • Publication
    Variations of the solar granulation motions with height using the GOLF/SoHO experiment
    Context: Below 1 mHz, the power spectrum of helioseismic velocity measurements is dominated by the spectrum of convective motions (granulation and...
  • Publication
    Vector magnetic field map at the photospheric level below and around a solar filament (neutral line)
    We present a vector magnetic field map obtained on 7 December 2003, below and around a filament located not so far from the active region NOAA 517, whose one...
  • Publication
    Vector magnetic fields of emerging solar flux. I. Properties at the site of emergence
    Several small emerging bipolar regions have been observed with the Advanced Stokes Polarimeter (ASP), including extensive time series measurements of one small...
  • Publication
    Velocity dispersion and dynamical mass for 270 galaxy clusters in the Planck PSZ1 catalogue
    We present the velocity dispersion and dynamical mass estimates for 270 galaxy clusters included in the first Planck Sunyaev-Zeldovich (SZ) source catalogue...
  • Publication
    Velocity dispersion and dynamical masses for 388 galaxy clusters and groups. Calibrating the M<SUB>SZ</SUB> − M<SUB>dyn</SUB> scaling relation for the PSZ2 sample
    The second catalogue of Planck Sunyaev-Zeldovich (SZ) sources, hereafter PSZ2, represents the largest galaxy cluster sample selected by means of their SZ...
  • Publication
    Velocity fields below the magnetic canopy of solar flux tubes: evidence for high-speed downflows?
    It is well-established that velocities in the immediate surroundings of solar magnetic elements produce an asymmetry in the Stokes V profiles emerging from the...
  • Publication
    Venus transit 2004: Illustrating the capability of exoplanet transmission spectroscopy
    The transit of Venus in 2004 offered the rare possibility to remotely sense a well-known planetary atmosphere using ground-based absorption spectroscopy...